Tuesday, September 16, 2008

Here is an interactive bar chart in a museum where people take tokens depending on how they answer a question. The frequencies of their responses can be seen as the columns get diminished with each selection.

Thursday, September 11, 2008

Today the Pentagon 9-11 Memorial is dedicated. Benches dedicated to each victim are arranged by the victim's age. Age lines start at 1930 for the oldest (71 years) and continue to 1998 for the youngest (three years old). An age wall runs along one edge from a height of 71 inches down to a height of 3 inches. Here is an interactive virtual tour of the memorial from the Washington Post.

According to an old article in the NY Times (April 2, 1946, p12) this is a copy of an official captured German map found by Allied intelligence officers sometime after WWII. It shows a bulls-eye target in the middle part of lower Manhattan. The concentric circles show concentrations of destruction from multiple V-2 type rockets or special orbital bombers. Elsewhere the map is topped with the normal curve modeling the east-west error distribution of these multiple attacks.